Regarding your comment I have bolded..
Do you really thing that if everyone stopped tipping, and the employers started paying them at least min wage, that we (consumers) wouldnt be paying the difference? If that were the case, everything we purchased would be MUCH more expensive than what tip you may leave. You are either young or have no grasp on economics in a capitalistic society, or both.
I don't think costs would have to go up that much, the minimum wage for a server is $2.13 while standard minimum wage is $7.25. That is a difference of just over $5.00. How many tables can one person serve in an hour? I know it will vary greatly but it will usually be more than 5 tables at a time. That will make the cost increase per table less than $1.00 which is quite a bit less than a standard tip so it would actually save most customers money.